6.3.1+customfmt patch

This patch will allow an administrator to define what format
user information is printed.  This information is shown in TRACE,
LTRACE, and some of the server notices.

The default for Hybrid 6 is "%s[%s@%s]", which has an issue with
the [ and ] characters appearing in the username.

Hybrid 7 uses "%s [%s@%s]", which disambiguates this and is
supported by current snapshots of TCM.

Other possible formats include "%s!%s@%s" and "%s(%s@%s)".  The
administrator is, of course, able to choose almost any format
he or she wishes, provided all fields are used and remain in
nick, username, hostname order.

-Hwy, 18 jan 2003